Professional Bellevue Replacement Window Dealer and Installer

Installing new windows in your home is one of the most impactful upgrades you can make, improving energy efficiency, comfort, security, and curb appeal all at once. At Lake Washington Windows and Doors, we make the process straightforward from start to finish. As a full-service replacement window dealer and professional installer serving Bellevue and the Greater Eastside, we pair an expertly curated lineup of premium window products with professional installation you can count on for the life of your home.

“The sales process was very productive in that the sales representative didn’t waste my time talking about things I didn’t care about. He asked the right questions about what was important for me and was able to answer all of my questions. When the installers showed up, it was obvious from the beginning that they were professional and knew what they were doing. I was very pleased with the entire process and already have referred a couple of my friends to them. Thank you again for a great job!”

– Howard Z., Bellevue, WA

Why Bellevue Homeowners Trust Lake Washington Windows and Doors Above Other Window Companies

Since 2008, Lake Washington Windows and Doors has provided award-winning replacement window services, earning us the reputation as a company that Bellevue homeowners can trust. With over 800 five-star reviews, an A+ BBB rating, and a team carrying 575+ combined years of industry experience, we bring a level of expertise and accountability that’s hard to match.

Every window we install is backed by our proprietary Leak Armor Guarantee, a commercial-grade installation system using multiple layers of flashing, pans, and sealants to protect your home against Washington’s relentless rain. When you choose Lake Washington Windows and Doors, you’re not just getting new windows; you’re getting a dedicated local team that stands behind every installation for the life of your home.

Window Manufacturers We Partner With

After 17 years of installing windows across Bellevue and the Greater Eastside, we’ve learned exactly what separates a great window from one that simply looks good on paper. We hold the manufacturers we partner with to high standards across four areas: consistent product quality, comprehensive warranty coverage, proven industry longevity, and a commitment to continuous innovation. The result is a curated lineup of window brands that we’re confident recommending to every homeowner we work with.

Replacement Window Materials We Offer in Bellevue

We provide windows built for the Pacific Northwest and engineered to handle the moisture, temperature swings, and the need for year-round energy efficiency. We offer three premium window lines, each suited to different home styles, budgets, and performance goals.

Anlin Del Mar & Del Mar Expanded Vinyl Windows

The Del Mar series from Anlin Windows and Doors is our flagship vinyl window, available exclusively through Lake Washington Windows and Doors. Built with advanced energy efficiency technology, the Del Mar exceeds ENERGY STAR® standards across every category while delivering exceptional noise reduction and reinforced security. The Del Mar Expanded shares the same high-performance platform but features a slimmer frame profile, maximizing glass area for homeowners who want more natural light and a cleaner, more modern aesthetic.

• Energy efficiency: Comfort•Core™ foam insulation, Inner•Core™ thermal reinforcements, and triple-fin weatherstripping work together to push Del Mar windows past ENERGY STAR® requirements in every category, keeping your home comfortable in every season while shrinking your utility bills.

• Noise reduction: A built-in sound suppression system using dissimilar glass thicknesses and argon gas fills cuts outside noise by up to 50%, turning a busy Bellevue street into a distant afterthought.

• Enhanced security: Fiberglass-reinforced lock rails, continuous interlocking frames, and optional laminated security glass make the Del Mar a formidable barrier against forced entry, giving you genuine peace of mind.

• Expansive views & elegant aesthetics: A slim frame profile puts more glass where it belongs, filling your rooms with natural light and unobstructed views, while a clean contemporary silhouette complements everything from classic Craftsman architecture to modern new builds.

• True Double Lifetime Warranty: Both lines are backed by one of the strongest warranties in the industry, covering all components, labor, and accidental glass breakage for as long as you own your home.

The Milgard C700 Series is engineered with a durable fiberglass frame that expands and contracts at nearly the same rate as glass, keeping seals tight and weatherproofing intact through years of Pacific Northwest conditions. Standard high-performance glass delivers advanced thermal performance through an ENERGY STAR® package perfectly calibrated specifically for the Seattle region. A slim modern frame profile, six color options, and available laminated glass for noise reduction make it a versatile fit for Bellevue homes.

• Built to last a lifetime: Fiberglass windows are among the most durable frame materials available, resisting the swelling, rotting, and warping that plague other windows through years of Pacific Northwest rain and temperature swings.

• Exceptional energy performance: Standard SunCoat® Low-E2 glass delivers up to 10% better thermal efficiency than the previous generation, helping Bellevue homeowners stay comfortable year-round while keeping utility costs in check.

• A noticeably quieter home: Optional laminated glass significantly cuts exterior noise, so whether your home sits near I-405, a flight path, or a busy Crossroads intersection, the difference is immediate the moment the window closes.

• Designed to look like it belongs: Six frame colors, coordinated hardware finishes, and a refined modern profile give the C700 the versatility to complement any home style, from a classic Northwest Bellevue Craftsman to a contemporary new build in Bel-Red.

• Peace of mind, built into every unit: The C700 is backed by Milgard’s Limited Lifetime Warranty for residential homeowners, with the option to upgrade to a Full Lifetime Warranty at purchase, because a window investment of this size deserves real protection.

The WinDor 2750 Bi-Fold is for Bellevue homeowners who want something beyond a standard replacement window. These windows fold away completely, opening up an entire wall to create a seamless connection between your indoor living space and the outdoors. As a certified WinDor dealer, we handle the full installation with our Leak Armor Guarantee included, and every WinDor window comes backed by a comprehensive Limited Lifetime Warranty.

• Aluminum-reinforced vinyl construction: Most window manufacturers build with a single material. WinDor combines the structural strength of aluminum with the thermal efficiency of vinyl, resulting in a folding window that’s more durable and better insulated than either material alone.

• Verified energy performance: Dual-glazed units with Cardinal 366 glass and argon gas fills deliver some of the lowest heat transfer ratings available in a folding window, keeping Bellevue homes comfortable year-round without overworking your heating and cooling systems.

• Full fold-away design: Panels fold completely out of the way to open an entire wall, creating a seamless transition between your interior living space and the outdoors, perfect for patios, decks, and backyard entertaining areas.

• Extensive customization: Available in six frame finishes, including WinShield® jet-black and bronze laminates engineered to resist harsh weather, with multiple glass types, grid patterns, and hardware options to match any home design.

• Limited Lifetime Warranty: WinDor stands behind the quality and ease of operation of every 2750 window unit, covering defects in materials and workmanship for as long as you own your home.

Proudly Serving Bellevue & the Pacific Northwest

Lake Washington Windows and Door experts proudly serve homeowners throughout Bellevue and the surrounding communities in and around King County, including Mercer Island, Newcastle, and Sammamish. The areas we serve within Bellevue include:

• Northwest Bellevue

• Bridle Trails

• Overlake

• Bel-Red

• Kenilworth

• Crossroads

• Lake Hills

• West Lake Sammamish

• Eastgate

• Newport Shores

• Factoria

• Cougar Hills

• Lakemont

• Newport

• Newport Hills

• Coal Creek

• Beaux Arts Village

Ready to Replace Your Bellevue Windows?

A window replacement project is a significant investment, and you deserve a company that makes the process straightforward from start to finish. At Lake Washington Windows and Doors, we’ve refined our window and door installation process over thousands of installations to be as smooth and stress-free as possible.

Request your own complimentary in-home window consultation today, and one of our experts will walk you through your options, help you choose the right energy-efficient windows for your home and budget, and provide a detailed estimate and financing options before you commit to anything.